121656026241 has 6 divisors (see below), whose sum is σ = 175725371250. Its totient is φ = 81104017488.

The previous prime is 121656026209. The next prime is 121656026243. The reversal of 121656026241 is 142620656121.

121656026241 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 5 + 602 + 6 + 2 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102958198641 + 18697827600 = 320871^2 + 136740^2 .

It is not a de Polignac number, because 121656026241 - 2⁵ = 121656026209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121656026196 and 121656026205.

It is not an unprimeable number, because it can be changed into a prime (121656026243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6758668116 + ... + 6758668133.

It is an arithmetic number, because the mean of its divisors is an integer number (29287561875).

Almost surely, 2^121656026241 is an apocalyptic number.

It is an amenable number.

121656026241 is a deficient number, since it is larger than the sum of its proper divisors (54069345009).

121656026241 is a wasteful number, since it uses less digits than its factorization.

121656026241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13517336255 (or 13517336252 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 121656026241 in words is "one hundred twenty-one billion, six hundred fifty-six million, twenty-six thousand, two hundred forty-one".